Kupindira-kupindira ndiko kunokosha zvakanyanya mugadziriro yemazuva ano, iyo inoratidza zvakananga kuita uye kuvimbika kwehurongwa hwese. Kune PCB mainjiniya, dhizaini yekudzivirira ndiyo kiyi uye yakaoma pfungwa yekuti munhu wese anofanira kugona.
Kuvapo kwekupindira muPCB Bhodhi
Mukutsvagisa chaiko, kunowanikwa kuti pane mana makuru ekupindira muPCB Dhizaini: Simba Supply Ruzha, kutapurirana mutsara kupindirana, coupling uye electromagnetic kupindira (EMI).
1. Simba Supply Ruzha
Mudunhu rakakwira-revanhu, ruzha rwekupa kwemagetsi rine pesvedzero iri pachena pane yakakwirira-frequency chiratidzo. Naizvozvo, chokutanga chinodiwa kuti simba rive ruzha ruzha. Pano, ivhu rakachena rakakosha sosi yakachena simba.
2. Transme 201
Kune marudzi maviri emhando dzekutapurika dzinogoneka muPCB: Strip Line uye microwave mutsara. Dambudziko rakakura nerondedzero yekutumira iri kuratidzwa. Kuratidzira kuchakonzera matambudziko mazhinji. Semuenzaniso, iyo mutoro chiratidzo ichave iyo superition yeiyo yekutanga chiratidzo uye iyo echo chiratidzo, iyo ichawedzera kuoma kwekuongorora chiratidzo; Kufungisisa kuchakonzera kurasikirwa kwekudzorera (kudzoka kurasikirwa), izvo zvinokanganisa chiratidzo. Iko kukanganiswa kwakakura sekudaro kwakakonzerwa nekuwedzera ruzha kupindirana.
3. Coupling
Chikwangwani chekuvhiringidza chinogadzirwa nekukanganiswa chinokonzeresa Electromagnetic kukanganisika kune iyo yemagetsi yekudzora system kuburikidza neimwe compling chiteshi. Iyo nzira yekukomberedza yekukanganisa haisi chinhu chinopfuura kuita pane zvemagetsi zvekutonga
4. Electromagnetic kupindira (EMI)
Electromagnetic kupindira EMI ine marudzi maviri: kuitisa kupindira uye kupomerwa kupindirwa. Kuitiswa kupindirana kunoreva kupindirana Yakatsemuka kupindira inoreva kupindira nzvimbo yekuvhiringidza Mune yakakwira-Speed PCB uye System Dhizaini, yakakwira-frequency masaini masaini, etcomputer manhamba eAntenna, iyo inogona kukanganisa mamwe mafungu uye inokanganisa mamwe masisitimu kana mamwe masisitimu ehurongwa. zvakajairika basa.
PCB uye Dunhu Anti-Kupindira Matanho
Kugadzirwa kweAnti-Jamming of Iyo Yakadhindwa Circited Board inoenderana chaizvo nedunhu rakati. Tevere, isu tinongoita dzimwe tsanangudzo pane dzinoverengeka zviyero zvePCB Anti-Jamming Design.
1. Simba tambo dhizaini
Sekureva kwehukuru hwekirabhu yadarika riripo, edza kuwedzera upamhi hwesimba renzvimbo kuti uderedze chiuno chekurwisa. Panguva imwecheteyo, ita kutungamira kwetsiva yemasimba uye iyo yepasi mutsara inoenderana neyakatungamirwa nedatha, iyo inobatsira kusimudzira kugona kweanti-ruzha.
2. Ground wire dhizaini
Paradzanisa nzvimbo yedhijitari kubva kuAnalog Ground. Kana paine ese maviri matunhu ematunhu uye mutsara mutsara pabhodhi redunhu, dzinofanira kuparadzaniswa zvakanyanya sezvinobvira. Iyo ivhu reiyo yakaderera-frequency dunhu rinofanira kuvharwa mukufananidzirwa pane imwechete pfungwa zvakanyanya sezvinobvira. Kana wiring chaiyo yakaoma, inogona kuve yakabatana mune yakatevedzana uye yakabva yadzika yakaenzana. Iyo yakakwira-frequency Dunhu rinofanira kuvharwa pamatanho mazhinji, iyo pasi waya inofanirwa kunge iri pfupi uye yakajeka, uye yakaita seyakakura-nharaunda nzvimbo inofanirwa kushandiswa kutenderedza chikamu chepamusoro-famba.
Iyo wira waya inofanira kunge yakakora sezvinobvira. Kana mutsara mutete wacho unoshandiswa kune waya yekuvhurwa, iyo inovhara ingano shanduko neazvino, iyo inoderedza kupokana nemwoyo wose. Naizvozvo, wima yawaya inofanirwa kuve yakakora kuti ipfuure katatu zvinobvumidzwa zvazvino pabhodhi rakadhindwa. Kana zvichikwanisika, iyo pasi waya inofanira kunge iri pamusoro 2 ~ 3mm.
Iyo pasi waya inoumba chiuno chakavharwa. Nekuti mapuranga akadhindwa akanyorwa chete emitambo chete, mazhinji ematunhu avo akarongwa mumatare ekuvandudza kurwisa kuripo.
3. Deacupling capacitor yekugadziriswa
Imwe yenzira dzechikamu dzePCB yekugadzira PCB ndeyekugadzirisa yakakodzera decopling capacitors pane imwe neimwe yakakosha chikamu chebhodhi rakadhindwa.
Nheyo dzakajairika dzekugadzirisa dzekushongedza macacitors ndeiyi:
① Batanidza 10 ~ 100F electrolytic capacititor kune iyo simba rekuisa. Kana zvichikwanisika, zviri nani kubatanidza kune 100F kana zvimwe.
②In nheyo, imwe neimwe yakasanganiswa Circuit chop inofanira kuve yakarongedzwa ne 0.01pf ceramic capacitor. Kana iyo gap yebhodhi rakadhindwa risina kukwana, a 1-10pf capacitor inogona kurongwa kune yega yega 4 ~ 8 chips.
③NGE.V.Vanoda zvine simba anti-ruzha kugona uye simba rakakura kana rakadzimwa zvishandiso zvekuchengetera zveRam uye neRom uye Capalpling Capacitor inofanira kubatana pakati peiyo chip.
④Tungamira kutungamira hakufanirwe kuve kwenguva yakareba, kunyanya iyo yakakwira frequency inopfuura nepasseka capacitor inofanira kunge isina kutungamira.
4. Nzira dzekubvisa Electromagnetic Kupindira muPCB Dhizaini
①reduce loops: Denga rega rega rakaenzana neAntenna, saka isu tinofanirwa kuderedza huwandu hwemabwe, nzvimbo yechiuno uye antenna mhedzisiro yechiuno. Ita shuwa kuti chiratidzo chine nzira imwe chete ye loop kamwe chete pane chero mapoinzi maviri, dzivisa zvishwe zvekunyepedzera, uye edza kushandisa iyo simba remagetsi.
②Flinting: Kufafa kunogona kushandiswa kuderedza EMI zvese pane iyo Simba mutsara uye pane mutsara weSignal. Pane nzira nhatu: decoupling capacitors, EMI mafirita, uye magineti.
③Bheoni.
Edza kuderedza kumhanya kwemidziyo yakakwirira-frequency.
Kuwedzera iyo Dilelectric inogara ichipfuura PCB Bhodhi inogona kudzivirira iyo yakakwira frequency zvikamu zvakadai sekutapurirana mutsara uri padyo nebhodhi kubva pakupenya kunze; Kuwedzera ukobvu kwePCB Bhodhi uye kuderedza ubvu hwemutsara wechioiri kunogona kudzivirira waya yemagetsi kubva pakunyanyisa uye zvakare kudzivirira radiation.